'struct class’ has no member named ‘teach’

[justine]

#include<stdio.h>
struct class
{
    int number;
    char name[20];
    struct jow
    {
        int num;
        char word[10];
    };
    float marks;
};
int main()
{
    
    struct class student[2]={{111, "rao", 22.50}, {222,"gto", 22.5}};
    struct jow teach={10, "ann"};
    printf("%s\n", student[1].teach.names);
    return 0;
}

Why the error ?

[grumpy]

struct jow is nested inside struct class, so is not usable outside struct class. Move its definition outside the definition of struct class.

Note: if your C compiler is actually a C++ compiler, your code will choke on having a "struct class" too, since class is a C++ keyword.

[justine]

I need it as a nested one.

#include<stdio.h>
struct class
{
    int number;
    char name[20];
    float marks;
    struct jow
    {
        int num;
        char word[10];
    }teach;
    
    
}student[2];
    
int main()
{
    struct class student[2]={{111, "rao", 22.50}, {222,"gto", 22.5}};
    struct jow teach={10, "ann"};

    printf("%s\n", student[1].teach.word);
    return 0;
}

No result.

[grumpy]

Nested class types are C++ specific. They are not permitted in C.

Either build your code as C++ (which will mean you need to change "class" to something else) or follow my original suggestion. No amount of wishing will create a valid third option.

[Salem]

> No result.
You mean that you saw nothing, because you didn't assign anything to student[1].teach before printing it.

$ cat foo.c
#include<stdio.h>
struct class
{
    int number;
    char name[20];
    float marks;
    struct jow
    {
        int num;
        char word[10];
    }teach;
    
    
}student[2];
    
int main()
{
    struct class student[2]={{111, "rao", 22.50}, {222,"gto", 22.5}};
    struct jow teach={10, "ann"};
    student[0].teach = teach;

    printf("%s\n", student[0].teach.word);
    printf("%s\n", teach.word);
    return 0;
}
$ gcc -Wall -ansi -pedantic foo.c
$ ./a.out 
ann
ann
$

[hk_mp5kpdw]

1. Why do you have both a global array named student and a local array as well.

struct class
{
    ...
} student[2];
     
int main()
{
    struct class student[2]={{111, "rao", 22.50}, {222,"gto", 22.5}};

Pick one or the other.

---

2. Given this:

struct class
{
    int number;
    char name[20];
    float marks;
    struct jow
    {
        int num;
        char word[10];
    }teach;
};

Instead of this:

struct class student[2]={{111, "rao", 22.50}, {222,"gto", 22.5}};
struct jow teach={10, "ann"};

If you wish to initialize a nested structure you can do it like this:

struct class student[2]={{111, "rao", 22.50, {5,"bob"}}, {222,"gto", 22.5, {10,"ann"} }};